Ee ja nai ka Ninja nai ka is a more ambitious release. This song is a lot more in-your-face than any of the groups previous releases, laying the energy and cheer on thick in order to keep you entertained. It’s probably this very aspect that makes the song both likable, and detestable in the fandom. So, you will either love this track it, or loathe it with every fiber of your being. That said, Ee ja nai ka Ninja nai ka is a fun track, and is just as catchy as Shalala! Yareru Hazu sa can be.

The music video is a lot more exuberant than the song is. Featuring scenes from the movie JK Ninja Girls, Kobushi Factory create an over-the-top display of colour, shine and cheer in this trippy MV. It’s very bright and can seem quite obnoxious at times, but it matches the energy and delight of the song perfectly. It also seems like the members of KF are having a great time filming this, which makes the video all the more fun to watch.

It is also rather obvious that, of the two music videos, this is the one that Hello! Pro threw their budget into, and their creativity. The jazzy shots, colourful effects and unique camera angles really work in the songs favour, and nothing seems out of place against the movie sequences. In fact, Ee ja nai ka Ninja nai ka flows really well as a video.

Also included in the Limited SP release are two additional B-side tracks, Yami ni Nukegake, and Pitch Pichi Tomodachi, which were both featured in the JK Ninja Girls stage musical, and included as feature songs in the movie. Both songs are just as high in energy as the previous two tracks, leaving very little room for diversity in this single release, though both are equally entertaining. Yami ni Nukegake feels a lot more Japanese in style due to the instruments used, whilst Pitch Pichi Tomodachi is a little cuter in sound, thanks to its high pitched vocals and the humorous addition of the Ninja Oyajis.

Overall, this is not a bad release from Kobushi Factory. In fact, it’s a really fun listen, if you can get past the lyrics and ambitious sounds. Both Shalala! Yareru Hazu sa and Ee ja nai ka Ninja nai ka are great songs, but it is up to you to decide how you feel about them. As a whole single though, this is a decent release, but it leaves little room for a diverse selection of songs. However, if you are looking for a single filled with hyperactive, energetic tunes, this could be your answer. Enjoy.

Shalala! Yareru Haze sa / Ee ja nai ka Ninja nai ka (Regular Edition Type A)

Shalala! Yareru Haze sa / Ee ja nai ka Ninja nai ka (Regular Edition Type B)

Shalala! Yareru Haze sa / Ee ja nai ka Ninja nai ka (Limited Edition Type A)

Shalala! Yareru Haze sa / Ee ja nai ka Ninja nai ka (Limited Edition Type B)

Shalala! Yareru Haze sa / Ee ja nai ka Ninja nai ka (Limited Edition SP)